Assume you have page A which is the "home" page for the web app. Assume there is a second page B which contains a form. After successfully processing the form the user is directed back to page A. If you need to display a success message for the previous action (the successful form submission), what is the best way to get that message for display? Assume you have page A which is the "home" page
阅读背景：
在表单成功页面上显示消息
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